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(Medium)   Want some fun facts for Pi day? The dorkiest one ever: ln (262,537,412,640,768,744) / sqrt (163) is... Pi?   (medium.com) divider line 34
    More: Interesting, transcendental number, Richard Feynman, square roots, star clusters, stumps, radius  
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2186 clicks; posted to Geek » on 14 Mar 2014 at 3:42 AM (40 weeks ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



34 Comments   (+0 »)
   
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2014-03-13 10:41:50 PM  
The number of people in my family tree divided by the number of marriages is a very bad approximation of pi. But it is a very good approximation to "Me and you and baby makes three."
 
2014-03-13 11:28:48 PM  

brantgoose: But it is a very good approximation to "Me and you and baby makes three."


Pi is exactly three!
 
2014-03-14 01:26:55 AM  
About that, subby:

Unbelievably, you get almost π, but not quite! You see, it's equal to π for the first 31 digits, but the 32nd digit is different!
 
2014-03-14 02:23:29 AM  
In other news, 3,141,592,654 / 1,000,000,000 = pi.  Almost.
 
2014-03-14 03:57:28 AM  
200 calories of celery weighs 1425 grams

1425 grabs is 3.14159 pounds

200 calories of celery == 5 decimals of pi
 
2014-03-14 04:00:52 AM  
25.media.tumblr.com
 
2014-03-14 05:05:37 AM  
This would have been more interesting in 1592.
 
2014-03-14 06:55:01 AM  
Down with Pi!

All hail Tau!
 
2014-03-14 07:01:01 AM  
How I need a drink, alcoholic of course, after the tough lectures involving quantum mechanics; but we did estimate some digits by making very bad, not accurate, but so greatly efficient tools!
 
2014-03-14 07:12:37 AM  
Yeah, well, sqrt(pi^2) is actually pi, subby, so there.
 
2014-03-14 07:56:07 AM  
Why not go both easy *and* accurate?

pi = 4 * (1 - 1/3 + 1/5 - 1/7 + 1/9 .....)
 
2014-03-14 08:07:43 AM  

Twinkles: Down with Pi!

All hail Tau!


It's for the Greater Good

www.wxl359.com
 
2014-03-14 08:11:48 AM  
Pi is irrational, so not quite.
 
2014-03-14 08:37:20 AM  
Is the fact that there is a cluster of 6 9's in a row really that important?
 
2014-03-14 08:48:27 AM  

Manhigh: Pi is irrational, so not quite.


sqrt(2) is irrational as well, but I can still write it as sqrt(326)/sqrt(163)...
 
2014-03-14 09:38:30 AM  
And finally, for the astronomy fans out there, there's a famous star cluster in the night sky that looks an awful lot like π
i235.photobucket.com
My.... my GOD, pi is writ in the very heavens!!! How could I have ever doubted a grand plan to the universe?
 
2014-03-14 09:41:02 AM  
Was anyone else really annoyed that the movie Contact cut out the best part of the book, where Ellie finds proof of not only of her story about meeting the aliens, but also that the universe was created with a message that was hidden deep inside Pi, a long string of 1s and 0s that in base 11 that when arranged the right way became a picture of a circle. To me, that brought the story to a neat ending that calls back to the religious debates scattered through the book, while the movie just kind of stopped at an ambiguous ending.
 
2014-03-14 09:41:37 AM  

UNC_Samurai: Twinkles: Down with Pi!

All hail Tau!

It's for the Greater Good

[www.wxl359.com image 256x256]


Down with Tau, all hail octopi:

mediacdn.snorgcontent.com
 
2014-03-14 09:45:27 AM  

Sid_6.7: About that, subby:

Unbelievably, you get almost π, but not quite! You see, it's equal to π for the first 31 digits, but the 32nd digit is different!


I felt that was written by the most mathematically orientated, sugar-high 11 year old girl ever.

/!
 
2014-03-14 09:46:56 AM  

van1ty: Is the fact that there is a cluster of 6 9's in a row really that important?


You have your weekend and I'll have mine.

/off to eat me some pi.
 
2014-03-14 10:12:53 AM  
There are ~π*10^7 seconds in a year.
 
2014-03-14 10:16:35 AM  

Sid_6.7: About that, subby:

Unbelievably, you get almost π, but not quite! You see, it's equal to π for the first 31 digits, but the 32nd digit is different!


Subby got me with that too. You'd think that we'd be used to inaccurate headlines on Fark by now . . .
 
2014-03-14 10:28:18 AM  
1.Setup computer program to calculate π is base 2.
2. Wait a while.
3. Obtain a digital copy of every song, movie, and book ever created.
 
Zel
2014-03-14 11:01:16 AM  

h2ogate: In other news, 3,141,592,654 / 1,000,000,000 = pi.  Almost.


Lets go with this one. Easy to make more precise too.
 
2014-03-14 11:22:44 AM  
I'll just leave this here......

The real March 14th..
 
2014-03-14 11:44:07 AM  
What is 6.28218.. ?
Two pieces of Pi

Thank you,
 
2014-03-14 11:55:03 AM  
I'll take 355/113 as "close enough" and a lot easier to remember.  Or just 3.1415926536, which isn't all that hard to remember either.
 
2014-03-14 12:24:07 PM  

error 303: There are ~π*10^7 seconds in a year.


Or, to within about half a percent, π seconds is a nanocentury.
 
2014-03-14 04:58:54 PM  

rumpelstiltskin: Manhigh: Pi is irrational, so not quite.

sqrt(2) is irrational as well, but I can still write it as sqrt(326)/sqrt(163)...


Indeed.

The issue with the expression in the title is that pi is not equal to n/sqrt(m) for any integers n and m.  This is because n/sqrt(m) is a root of m*x^2 - n^2, and pi is not a root of any polynomial with integer coefficients.  In other words, n/sqrt(m) is ruled out not because pi is irrational (although it is) but because pi is transcendental.
 
2014-03-14 05:09:18 PM  
(e^π)-π = 20

/old one, not obscure.
 
2014-03-14 06:57:34 PM  

quokka70: rumpelstiltskin: Manhigh: Pi is irrational, so not quite.

sqrt(2) is irrational as well, but I can still write it as sqrt(326)/sqrt(163)...

Indeed.

The issue with the expression in the title is that pi is not equal to n/sqrt(m) for any integers n and m.  This is because n/sqrt(m) is a root of m*x^2 - n^2, and pi is not a root of any polynomial with integer coefficients.  In other words, n/sqrt(m) is ruled out not because pi is irrational (although it is) but because pi is transcendental.


I don't think that's quite enough either, because the numerator in the expression in the title is transcendental as well. But sort of to your point, I'm willing to bet you can't get pi if you start with the rationals and extend that by logarithms of positive rationals. (You can get pi if you allow logs of negative rationals, but that's clearly not what we have here.)
 
2014-03-14 07:57:10 PM  
Not seeing any π  in here. I did find your mom, though.img.fark.netTo be fair, she's lookin' pretty hot!
 
2014-03-14 09:31:36 PM  
Fun fact:  to calculate the circumference of the observable universe to an accuracy of the width of a hydrogen atom, you need no more than 39 digits of pi.  A guy I knew in engineering school memorized pi to 500 digits, so the last 461 of them had no practical value.  Impressed the ladies, however.

/no, it didn't
 
2014-03-14 11:56:36 PM  

fatbear: Why not go both easy *and* accurate?

pi = 4 * (1 - 1/3 + 1/5 - 1/7 + 1/9 .....)


For some reason I always remember:   Pi = 4*arctan(1).
 
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